Refrigerator.



Patented July 31, 1917.

P. E. NITTINGER.

REFRIGERATOR.

APPLICATION FILED 8EPT-26| HHS! y. 02. MM.

P HILPEL EARNEST NITTINGER, OF BALTIMORE, MARYLAND.

REFRIGERATOR.

Application filed September 26, 1913.

To all whom it may concern:

. Be it known that I, PHILPEL EARNEST Nn'rrNenR, a citizen of the United States, residing at Baltimore city, in the State of -Maryland, have invented a new and useful Refrigerator, of which the following is a specification.

My invention relates to improvements in refrigerators, and the object of my improve- 10 ment is the providing of means for ventilating a refrigerator and controlling the ventilation thereof.

A further object of my invention is the providing of means for ventilating the in sulating space of a refrigerator and controlling said ventilation.

A further object of my invention is the providing of means in a refrigerator of connectin the insulating space with the interior t ereof and providing means of controlling the ventilation of the said two spaces with reference to each other.

A further object of my invention is the providing in a show case refrigerator means of ventilating and equalizing the interior and insulating spaces with reference to the exterior to preventcondensation thus maintaining transparent walls.

A further object of my invention is the providing of a refrigerator embracing my improvements of extreme simplicity and ease of adjustment and operation in accomplishing the above desired results.

With the foregoing and other objects in view, my invention consists of the novel construction, combination and arrangement of parts as hereinafter specifically described and illustrated in the accompanying draw ing, wherein is shown the preferred embodiment of my invention, but it is to be understood thatchanges, variations and modifications may be resorted to which come within the scope of the claims hereunto a pended.

In the drawing, of the herein escribed embodiment of my invention; Figure 1,

' shows in perspective a show case refrigerator embracing m invention; Fig. 2, is an isometric view ta en through A B of Fig. 1 showing the refrigerator in section; Fig. 3, is an isometric view taken through C D of Fig. 1, showing the refrigerator in section; Fi 4, is an enlarged sectional view of the top ing a means of connecting the front insulating space with the top insulating space; and,

Specification of Letters Patent.

ont edge of the refrigerator show- Patented July 31, 1917.

Serial No. 791,900.

Fig. 5, is an enlarged sectional view of the bottom front edge of the refrigerator showing means of connecting the front insulating space with the bottom insulating space, and of connecting the. bottom insulating space with the interior of the refrigerator.

Similar numerals refer to similar parts throughout the several views.

1 is the top front edge. 2 is the bottom front edge. 3 is the bottom end edge. 4 is the top end edge. 5 is the outside'wall, in show case refrigerators made of glass and usually covering the front, two ends and top of the refrigerator, the doors 6 being of usual construction are placed in the rear thereof and may be transparent if desired; in the drawing three doors are shown in the rear, one at each end of the back and one in the center of the back for access to the ice space, I claim nothing concerning these doors or their construction. 7 is the inside wall.

Between outside wall 5 and inside wall 7 are insulating spaces 8. The various insulating spaces 8 are connected together at the edges by openings 9. 10 is the bottom insulating space and is connected to adjacent insulating spaces 8 by openings 11. 12 is the interior of the refrigerator. 13 is the refrigerator floor, preferably constructed of glass or stone and rests upon supports 14 in such a manner that a free circulation may be had in all parts of the bottom insulating space 10 of the air therein and around the edges of said floor 13 with the air in the interio'r 12. 15 is the ice pan which rests on supports 14 in a similar manner as the floor.

16 is the top ventilator in the top support 17 and is adapted to be opened and closed at pleasure, thus controlling the opening between the exterior air and the air in the interior 12 and may be of any desired type, in the drawing a simple register is shown. 18 is the top end ventilator and 19 bottom end ventilator, both ventilators connecting insulating space 8 with the exterior air and may be similar in construction to top ventilator 16 and may be opened and closed or regulated at pleasure to control the circulation ofair in the insulating ace 8 bottom insulating space 10 and interior 12 in conjunction with top ventilator 16.

In mountin walls 5 and 7 an edge stnp 20 is preferab y used to make a tight joint, said.strip being of some elastic or yielding material, such as rubber or an elastic compound, thus allowing for different expansion in the walls and edge strips.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: I

'1. In a refrigerator, insulating space in the wall thereof means of ventilating the said space with reference to the exterior air and means of ventilating the said space with reference to the interior of the refrigerator and means controlling the said two ventilations independently.

2. A show refrigerator consisting of external transparent walls, internal transparent walls, an air space between said two walls, direct communication between the external air and the internal space within the internal walls, means of controlling said communication, means of direct communication between the air space between said walls and the external air, means controlling said communication and means of communication between the internal space and the air space between said walls.

3. In a refrigerator, a refrigerator floor provided with a continuous ventilating space around the edge thereof in communication with the space between the said floor and the bottom of said refrigerator.

4. In a refrigerator, a refrigerator floor provided with a continuous ventilating space around the edge thereof in communication with the s ace between the said floor and the bottom 0 said refrigerator, and means of communication between said space and the space between the outside walls and the inside walls.

5. In a refrigerator, a refrigerator floor provided with a continuous ventilating space around the edge thereofin communication with the space between the said floor and the bottom of said refrigerator, means of communication between said space and the space between the outside walls and the inside walls, and means of ventilation between the external air and the interior of the refrigerator and means controlling the same, and means of ventilation between the insulating space in the walls and the external air and means controlling the same.

6. In a refrigerator, a refrigerator floor provided with a continuous ventilating space around the edge thereof in communication with the space between the said floor and the bottom of said refrigerator, means of communication between said space and the space between the outside walls and the in side walls, means of ventilation between the external air and the interior of the refrigerator and means controlling the'same, and means of ventilating between the insulating space in the walls and the external air and means controlling the same in combination with transparent inside and outside Walls.

VVIILIAM W. VARNEY, WALTER R. HEATH. 

